diff --git a/ap/libc/glibc/glibc-2.23/string/memccpy.c b/ap/libc/glibc/glibc-2.23/string/memccpy.c
new file mode 100644
index 0000000..58da4d3
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/string/memccpy.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <string.h>
+
+#undef __memccpy
+#undef memccpy
+
+#ifdef MEMCCPY
+# define __memccpy MEMCCPY
+#endif
+
+/* Copy no more than N bytes of SRC to DEST, stopping when C is found.
+   Return the position in DEST one byte past where C was copied, or
+   NULL if C was not found in the first N bytes of SRC.  */
+void *
+__memccpy (void *dest, const void *src, int c, size_t n)
+{
+  void *p = memchr (src, c, n);
+
+  if (p != NULL)
+    return __mempcpy (dest, src, p - src + 1);
+
+  memcpy (dest, src, n);
+  return NULL;
+}
+
+weak_alias (__memccpy, memccpy)